(Updates with news of ex-Japan PM being shot)

By Tom Westbrook

SINGAPORE, July 8 (Reuters) - The Japanese yen rose by nearly half a percent against the U.S. dollar on Friday, in what appeared to be safe-haven buying in the minutes after news that former prime minister Shinzo Abe had been shot.

The yen rose as far as 135.33 per dollar after news that Abe had been taken to hospital after collapsing while delivering a speech in the western city of Nara, after gunshot-like sounds, according to reports by public broadcaster NHK.

Kyodo News said the former premier, architect of the Abenomics brand of reforms, was unconscious and appeared to be in cardiac arrest.

The euro was pinned at a 20-year low, licking its wounds at the end of its worst week in two months as investors braced for Europe to tip in to recession, while markets awaited U.S. jobs data to set the next direction for the dollar.

The euro is down more than 2% this week on fears that gas shortages loom in Europe and economic growth will suffer. It hit a two-decade trough of $1.0144 overnight and is barely clinging on above parity, last buying $1.0161.

The euro's slide has vaulted the U.S. dollar index to a two-decade high of 107.270 this week, and the index was last just below that level and up 0.04% in Asia at 107.02.

"Europe is exposed to large risks around energy dependency, a cost of living crunch on the consumer, and fragmentation risk. This spells euro/dollar lower," said analysts at Citi.

The Australian dollar rose 0.3% on Friday to $0.6850, scraping from a two-year low of $0.6762, with help from a infrastructure-led stimulus program announced in China that traders hope will boost demand for raw materials.

Sterling also looks set to have navigated a week of British political chaos relatively well. It is down 0.3% on the week, but bounced a bit overnight when Prime Minister Boris Johnson quit, ending uncertainty about his future.

The pound last bought $1.2053 and was on course for its best week in more than two years on the ailing euro.

The New Zealand dollar rose 0.3% to $0.6192 and looks set for a steady week. Growing unease at the world's economic outlook has steadied a sliding Japanese yen, as investors look for safety.

While surging energy prices look to take the wind out of confidence and growth in Europe, investors have also been worried about the U.S. economy, even though the most recent data has been better than expectations.

U.S. non-farm payrolls figures are the next indicator, due at 1230 GMT, with economists forecasting some 268,000 jobs were added in June.